Did i mess up?(only if ur patient)?

Ok i was at the movies with my gf and wew went out side wen it was over n her brother was there with som his friends they r white boy gang wannabes and he walks up with his friends im in 7th grade hes in 8th and hes all y u with my sister here n al lthat crap and she tells him to go away thn a couple of my friends came out of a movie and saw wat was goin on and idk how it start but there was like a sudden break out and every body was fightin and anyway i beat the **** out of her bro and she got really mad he tohught he was protectin her he was just pissin me off now she wont talk to me idk wat to do